I have wireless nic in my laptop connected to a router who is in turn connected to a DSL ISP. Everything is working OK. I recently configured the wired nic of the same Laptop to be connected to a separate ISP thru a cable modem. Status view of available networks shows that the wireless is still connected and working properly, but all my IE running instances are connected to the newly defined wired nic. My question: how can I force a specific IE (or FF, or Opera) window to connect thru the wireless nic and others thru the wired nic?

You can manage this only, if the routers are supporting proxy server functionality.
In that case, you can configure each browser to use the appropriate proxy.

Thanks paulsep for the quick reply. But could you be more specific about how to change proxies? I don't have two routers but rather one router to handle the wireless nic and cable modem (no router) connected by cat5 to the wired nic.

Curious what do you expect to gain by having two ISPs and two active network?

i_Xp/VistaUser

Here's the deal oshiod:

1. you can only have one default gateway
2. Windows will decide the fastest route and only use that interface [usually the wired one]

You can only configure an app to use a particular connection IF you cant tell it to go find a proxy server which some routers can act as.

In your case you might want to do a web search for a software proxy application that can combine the links into a single virtual interface for Windows. Nothing free that I know of.

Imagine the power if you knew how to internet search

Seems to be a popular request.

I read it wrong and answer it wrong too. So get off my case you peanut.

To XpUser:
There's a couple of reasons, for me at least, to ask for this. First, not all ISPs were created equal. Some are blocking or slowing down ports, so BT clients apps for example should not use them. Second, some are not stable, and may go down (even temporarily) just in the middle of critical session (e.g. bank transaction). to clarify, I'm NOT interested in automatic combining of the links in order to achieve broader band or redundancy, which can be done (hopefully) by the OS.
To wanderer:
Do I actually need a third party software to make Opera or IE browsers use a proxy? If not, how do I do it? Will the app not using a proxy use the wired link automatically?

I see but on the matter of online banking I doubt there is any financial institutions that allow simultaneous login for security purposes.

In the case of losing connection, you also will never be able to configure wireless connection to take over wired connection or vice versa to continue doing "critical session" whatever it is.

i_Xp/VistaUser